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Question: 1 point the surface z fx y is shown in...

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(1 point) The surface z -f(x, y) is shown in the diagram. The green point is A - (-2, 2, 0) and the red point is B (2,2, 0) (a) Are the following quantities positive, negative, or zero? 2.f, (4) 0.25 $ 4 (A) (b) Suppose a point P in the xy-plane moves in a straight line from the green point A to the red point B 수 1. Does the sign off,, (P) change from positive to negative, negative to positive, or is there no change in sign? 2. Does the sign off (P) change from positive to negative, negative to positive, or is there no change in sign? (Drag to rotate)

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